The fund suggests the low volatility of recent years may be owing to greater economic stability, improved central-bank credibility or the better dispersion of risks around the financial system.
基金组织认为近几年的市场低波动率可能得益于更为稳定的经济状况，央行可信度的提高或者金融体系风险的更好的分散。
It shows that negative chirp can improve the dispersion characteristics of system.
分析结果表明，利用负啁啾可以改善系统的色散特性。
The existence of various lacunas in bolt bonding system will cause the acoustic wave energy attenuation, phase aberration and frequency dispersion.
由于锚固体系中有不同大小和程度的缺陷，声波在传播过程中将产生能量衰减、相位突变及频散现象。
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